Tip Bank

Question: How can I check to see if a file is in use/open? Answer: An easy way to do this is to attempt to open the file for writing. If

Question: I have a little problem which I can’t solve. I will give the question with an example. I’m working with Excel. In a cell the string “100dpi.txt” is written.

Question: Is there any way to get more than 255 objects on a VB form? Answer: No, there’s not a way to pass the limit of 255 objects per form.

You can use Java’s layout managers to maintain the relative position of objects in an applet without manually repositioning them as the applet’s size changes. However, you may occasionally want

Normally, you declare functions and classes in a .h file and place their definition in a separate .cpp file. With templates, this practice isn’t really useful because the compiler must

It’s customary to use output statements as a debugging aid. For example, displaying the name of a function that is currently in scope or printing a variable’s value on the

While working with controls in HTML forms, you can assign ID as well as NAME attributes to the controls. You can then access both ID and NAME attributes through client-side

I recently received a question from a reader who asked how to sort a large file. My solution was based on the qsort() algorithm, which is the only sorting algorithm

In following expression: if (ticket_price > 7.50) What’s the type of the literal 7.50? One might think that it’s float. However, the actual type is double. To force the compiler